/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * This file incorporates work covered by the following license notice:

 *

 *   Licensed to the Apache Software Foundation (ASF) under one or more

 *   contributor license agreements. See the NOTICE file distributed

 *   with this work for additional information regarding copyright

 *   ownership. The ASF licenses this file to you under the Apache

 *   License, Version 2.0 (the "License"); you may not use this file

 *   except in compliance with the License. You may obtain a copy of

 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .

 */

#include <sal/config.h>

#include <string_view>

#include <propertysethelper.hxx>

#include <com/sun/star/beans/PropertyVetoException.hpp>

#include <com/sun/star/beans/UnknownPropertyException.hpp>

using namespace ::com::sun::star;

namespace canvas

{

    namespace

    {

        void throwUnknown( std::u16string_view aPropertyName )

        {

            throw beans::UnknownPropertyException(

                OUString::Concat("PropertySetHelper: property ") +

                aPropertyName + " not found."

                );

        }

        void throwVeto( std::u16string_view aPropertyName )

        {

            throw beans::PropertyVetoException(

                OUString::Concat("PropertySetHelper: property ") +

                aPropertyName + " access was vetoed." );

        }

        struct EntryComparator

        {

            bool operator()( const PropertySetHelper::MapType::MapEntry& rLHS,

                             const PropertySetHelper::MapType::MapEntry& rRHS )

            {

                return strcmp( rLHS.maKey,

                               rRHS.maKey ) < 0;

            }

        };

    }

    PropertySetHelper::PropertySetHelper()

    {

    }

    void PropertySetHelper::initProperties( InputMap&& rMap )

    {

        mpMap.reset();

        maMapEntries = std::move(rMap);

        std::sort( maMapEntries.begin(),

                   maMapEntries.end(),

                   EntryComparator() );

        if( !maMapEntries.empty() )

            mpMap.reset( new MapType(maMapEntries.data(),

                                     maMapEntries.size(),

                                     true) );

    }

    void PropertySetHelper::addProperties( const InputMap& rMap )

    {

        InputMap aMerged( maMapEntries );

        aMerged.insert( aMerged.end(),

                        rMap.begin(),

                        rMap.end() );

        initProperties( std::move(aMerged) );

    }

    bool PropertySetHelper::isPropertyName( const OUString& aPropertyName ) const

    {

        if (!mpMap)

            return false;

        Callbacks aDummy;

        return mpMap->lookup( aPropertyName,

                              aDummy );

    }

    uno::Reference< beans::XPropertySetInfo > PropertySetHelper::getPropertySetInfo() const

    {

        // we're a stealth property set

        return uno::Reference< beans::XPropertySetInfo >();

    }

    void PropertySetHelper::setPropertyValue( const OUString& aPropertyName,

                                              const uno::Any&        aValue )

    {

        Callbacks aCallbacks;

        if (!mpMap || !mpMap->lookup(aPropertyName, aCallbacks))

        {

            throwUnknown( aPropertyName );

        }

        if (!aCallbacks.setter)

            throwVeto( aPropertyName );

        aCallbacks.setter(aValue);

    }

    uno::Any PropertySetHelper::getPropertyValue( const OUString& aPropertyName ) const

    {

        Callbacks aCallbacks;

        if (!mpMap || !mpMap->lookup(aPropertyName, aCallbacks))

        {

            throwUnknown( aPropertyName );

        }

        if (aCallbacks.getter)

            return aCallbacks.getter();

        // TODO(Q1): subtlety, empty getter method silently returns

        // the empty any

        return uno::Any();

    }

    void PropertySetHelper::addPropertyChangeListener( const OUString&                                  aPropertyName,

                                                       const uno::Reference< beans::XPropertyChangeListener >& /*xListener*/ )

    {

        // check validity of property, but otherwise ignore the

        // request

        if( !isPropertyName( aPropertyName ) )

            throwUnknown( aPropertyName );

    }

    void PropertySetHelper::addVetoableChangeListener( const OUString&                                  aPropertyName,

                                                       const uno::Reference< beans::XVetoableChangeListener >& /*xListener*/ )

    {

        // check validity of property, but otherwise ignore the

        // request

        if( !isPropertyName( aPropertyName ) )

            throwUnknown( aPropertyName );

    }

}

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